A, this product is plenty of comprehensive nutritional essences including nitrogen, phosphorus, potassium, calcium, magnesium, sulphur, copper, iron, manganese, zinc, boron, molybdenum, which are necessary for plant growth. B, this product is good for increasing soil organic matter, improving soil structure, enhancing abilities of preserving moisture and fertility, raising heat and permeability, improving nutrient environment for crop, and the effectiveness of fertilizer and soil structure. C, enhance the yield more than 20%. 20kg/bag£¬25kg/bag, 20kg/carton, 40kg/bag Or others packing as per clients, request.